actually "TWA" made them...but i just re-uploaded that folder icon. cause he de-activated his account.but i will possibly make some icons in that style...take a look at my other ones I recently made...

well you can use it by reaplcing the icon in the application/shortcut...or even using stardocks icon packager to replace them in all the folder icons...or right click a folder and go to [preperties] then to the right to the customize tab...and replace the icon their...